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CH32F103 Bluepill clone work with arduino IDE

Hello All I am seeking help making this cheap chineese STM blupill board work.

about the small motors

hey i recently saw a video about these really small motors that will be used for finger joints in robots anyoone has the pcb of it?

Help me make this work

few days ago i asked if this circuit would be safe and i got the answer that it should be okay but now that i test the same circuit irl it isnt working?
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Confirming a working dock for Uno Q

Greetings folks - I wanted to share a usb-c dock that I can confirm works very well with the Uno Q: https://a.co/d/7NzGytt...
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ESP32-S2 COM Port disconnect Reconnects

Hello All, I have a Arduino library that connects Flight Sim Falcon BMS to Arduino via serial Communication, I have a user who is trying to use and esp32-s2 but having an issue with the devices com ports. As I understand it this device has serial communication for uploading the sketch by in dfu mode by holding the boot button and the other which should be for serial communication. When I plug in the device com port shows up, I am able to connect to the PC app with the DTR enable flag on(usua...

Oscillating Water Column Energy Converter IoT using Arduino UNO

Hi everyone, I’m currently working on an oscillating water column project. The goal is to store the electrical energy generated from the turbine’s rotation into a battery. I’d like to know how I can use an Arduino Uno to measure the voltage, current, and power output, and then send this data through IoT so it can be monitored on a smartphone. ...

Teensy CAN project

Hi guys, i'm trying to build a teensy project that listens to CAN messages from my cars ECU. My ECU is a standalone ecu since the car is supercharged, and with that the ECU has an AUX plug that features can/hi lo access. I've spoken to the ECU manufacter and they said I need to have a 120ohm resistor going across the CAN HI + LO. I've done that, but i'm still receiving no messages what so ever, the BAUD rate is definitely correct as that's something I can set in the ECU software, i've tried 250kbs, 500kbs and 1mb. I've attatched a crude diagram to show how i've got it all setup. Unfortunately I am NEVER seeing any CAN messages from my ECU. I'm wondering if it's a wiring / setup issue. Would love some feedback as this is my first attempt at anything like this....
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L298N Motor Driver help

Using an Arduino Uno, L298N Motor Driver and a DC Motor. The Arduino is powering the Motor Driver Im using the attatched schematic as reference. I dont see any glaring issues (all the pins seem to be connected and correct) but the motor isn't running. I dont have easy access to a multimeter to check anything...
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Testing my matrix there is always a button that doesn't work.

Trying to do a simple button box with arduino. I'm testing my current wiring to see if it works in arduino. I set on my code to have 2 rows and 5 columns, I will add more rows in the future. If I swap my cols or row pins in the arduino, the button that doesnt work moves position. Sadly I don't own a multimeter, I resoldered the spots that could look weak/bad, so I'm assuming there is something wrong with the wiring. My code: https://hastebin.com/share/imilaguvix.csharp...
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Is this circuit safe for an arduino uno r4 wifi

Hi, i am new to arduino and electronics and wanted to know if this circuit will be safe with arduino The circuit works the way it should in the simulator but im a bit paranoid about damaging my board https://www.tinkercad.com/things/58MQCuaYcuU/editel?returnTo=%2Fdashboard...
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I need help making this work

i have these components: - Nano Arduino - 2N2222 transistors - 5V led strip + - - SR602 Pir sensor...
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ESP32, Relay Module, and 5V DC Pump configuration

Hello guys, sorry to the ugly diagram. I am playing around the 5v DC water pump and a relay module. I plugged the components like in the diagram and uploaded the code to test the components. After uploading the code to the esp32, it shows errors once in a while which sometimes messes the esp32. I don't have a power module at the time so i have to use the 5v of the Arduino Uno. Also the 5Vin of the esp32 that I have doesn't output any voltage hence i just used the 3.3v of the esp32. I tried to use the components on their own and it works fine, but once i put them all together, like in the diagram, it shows weird behavior. code of the esp32:...
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connection issues

So I’ve been trying to get this board to register, connect, or whatever you want to call it, for the past two weeks, and it just won’t, no matter what I do. I’ve tried a different program. I’ve tried updating the driver. Nothing works and it also shows up as an Arduino R4 Wi-Fi even though I’ve never owned an Arduino R4 and there’s certainly never been an Arduino R4 Wi-Fi plugged into my computer In the photos, you can see the error message and the settings I have on it and I have checked that t...
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Capteur effet hall + Mosfet

Bonjour, je voudrais savoir avec quel kit je peux concevoir un module qui comprends un capteur à effet hall (détection champ magnétique) et une commande Mosfet pour activer une charge en 12 volts ?! Merci de votre aide 😇🙏...

Can't get GPS coordinates with A7670E module

Hi, I’m testing my module A7670E 4G module with an ESP32-C3 Mini to get GPS coordinates. I’m sending AT+CGNSSINFO in a loop, but the response I get is always: +CGNSSINFO: ,,,,,,,,...

When is common ground needed?

Hi all! I'm new to all this, and my first project to learn hardware is reading my car's CAN bus! I bought a MCP2515 CAN Bus Module with a TJA1050 Receiver. I set it up correctly with my arduino, but all the data I'm reading is essentially junk (keeps repeating itself, even when it really should be different). I only connected pin 6 & 14 (OBD cable) to the MCP2515 module, so technically, TJA1050 has no common ground ( car & arduino )... Could that be messing up everything? Or not in reality?...

Best Sensor for Measuring Sugar Level in a 500ml Drink (Compatible with Arduino/ESP32)

Hello everyone, I'm currently working on a project where I need to measure the sugar concentration in a 500 ml liquid drink. Could anyone recommend a sensor compatible with Arduino or ESP32 that can accurately measure the sugar level, similar to how a digital hydrometer works?...

GRBL compiling

I don’t have an official Arduino Uno. I went with this one below https://a.co/d/2qLXZfM so when I downloaded the ESP 32 library for the ESP 32S3 module when I went to hit compile, it said this...

Is it possible to connect a headswitch and use it to control motors/wheels?

Like a headswitch with a phone/jack connector. If you have 2 DC motors and 2 encoders, can you put some kind of audio jack socket on an arduino and program it to active the motors on and off?
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